The invention relates to a detectable molecule comprising a biospecific binding reactant attached to a macrocyclic luminescent lanthanide chelate comprising a lanthanide ion and a chelating ligand of the formula (I) wherein, R1 consists of a linker coupling the chelate to the biospecific binding reactant and optionally a spacer; either R3 or R4 is H; and the lanthanide ion Ln3+ is europium(lll) or samarium(lll). The invention also relates to corresponding lanthanide chelates. The invention further relates to the use of the detectable molecule of the invention.
该发明涉及一种可检测分子,包括与一种大环荧光
镧系螯合物结合的
生物特异性结合试剂,所述大环荧光
镧系螯合物包括一个
镧系离子和一个
化学配体,其
化学式为(I),其中,R1由将螯合物与
生物特异性结合试剂耦合的连接物和可选的间隔物组成;R3或R4中的一个是H;
镧系离子Ln3+为
铕(III)或
钐(III)。该发明还涉及相应的
镧系螯合物。该发明还涉及利用该发明的可检测分子。